Holdout Settlement

Oracle Text

T: Add C. (C represents colorless mana.)

T, Tap an untapped creature you control: Add one mana of any color.

Card Rulings

1/22/2016 To activate the last ability, you may tap any untapped creature you control, including one you haven’t controlled continuously since the beginning of your most recent turn. (Note that tapping the creature doesn’t use [the tap symbol].)

I really like this card. Surprised its a common actually. I admit that I play casual and not competitive, and I like budget friendly stuff but I have a few decks that I already know this would be great in.

Many decks have creatures that are there for abilities and not attacking or blocking. Like blood artist for example. Taping that creature is of no loss at all.

I could see some fun with the untap mechanic from shadowmoor and eventide.

Its a way of preventing a "this creature must attack if able" creature from attacking.